Strand-whipping mechanism



April 5 1925.

C. o. HAA$E STRAND WHIPPING MECHANISM 2 Sheets-Sheet 1 Filed August 9, 1924 jizeizzfor Aprii 6 1923.

c. o. HAASE STRAND WHIPPING MECHANISM Filed August 9, 1924 2. Sheets-Sheet 2 Carl fiddl Patented Apr. 6, 1926.

UNITED STATES PATENT OFFICE."

CARL ODENWALD HAASE, OF WINNETKA, ILLINOIS, ASSIGNOR TO WESTERN ELEC- TRIO COMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

STRAND-\VHIPPING MECHANISM.

Application filed August 9, 1924. Serial N0. 731,038.

To all whom it may concern:

Be it known that I, CARL ODENWALD HAASE, a citizen of the United States, residing at VVinnetka, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in StrandlVhipping Mechanisms, of which the foilowing is a. full, clear, concise, and exact description.

This invention relates to strand whipping .mechanisms, and more particularly to a mechanism for whipping telephone cords with strand material preparatory to securing terminals thereto.

An object of the invention is to mechanically whip cores with strand material accurately, speedily and with a minimum amount of manual labor.

Another object of the invention is to provide amechanism for whipping the end of a core with a plurality of strands.

In accordance with the general features of the invention there is provided a. whipping device which simultaneously draws wire and. thread from their respective supply sources, and simultaneously whips both the thread and the Wire about the end of a telephone cord which is automatically moved back the desired distance for each turn of the wire and thread whipped on the cord. The wire is applied to the electrical conductor of the cord and may be soldered to the terminal while the thread is applied to the end portion of the braided covering of the cord to prevent fraying thereof. A member, in which the ends of the wire and thread are held during the whipping operation, is maintained in a central and sta tionary position in relation to the revolving whipping device. This stationary member is provided with a surface to sever the wire and thread after the whipping operation is completed.

Other objects and advantages of the invention will more fully apear from the following detailed description taken in connection with the accompanying drawings which illustrate one embodiment thereof and in which,

Fig. 1 is a fragmentary elevation partly in section of the whipping mechanism;

Fig. 2 is an enlarged fragmentary view showing the starting and stopping mechanism of the whipping mechanism shown in Fig. 1; s

Fig. 3 is an enlarged detailed view of the mechanism for maintaining the holding and severing devices in a stationary position;

Fig. 4: is a side view of the structure shown in Fig. 3; i

Fig. 5 is an enlarged view of a portion of a cord with an end whipped with wire and thread clearly showing the waythe thread and wire are laid thereon;

Fig. 6 is an enlarged plan view of the whipping arm, and

Fig. 7 is'an enlarged View of the whipping arm as shown in Fig. 1.

Referring now to the drawings in detail in which like reference numerals designate similar parts throughout the several views, 10 denotes a housing which may be suitably supported on any usual type of a bench (not shown), Formed on one end of a longitudinal shaft 12 is a member 13 which carries a small bent guide pen .11 (Figs. 6 and 7). Secured to one side of the member 13 is a cutting blade 15, the knife edge 16 of which is slightly tapered. Interposed between the blade and the side of the member 13 is a retaining clip 17 It will be noted, as best shown in Fig. 6, that the guide pin lt is on one side of the top surface of the member 13 and the blade 15 and the retaining clip 17 are on the other side.

Surrounding the shaft 12 is a sleeve 18 on one end of which is secured a circular member 19 on which is formed a whipping arm 20 (Fig. 1). Splinecl to the other end of the sleeve 18 is a disk 24 on which bobbin or cop holders 25 and 26 are mounted. Contiguous with and secured to the disk 2% is a gear 27 on which is formed a long hub 28 which is eccentric on its end as best shown in Figs. 3 and 4. Extending through the hub 28 and gear 27 is a bore 29 in which is inserted a bushing 30.

Secured to the other end of shaft 12 is a ring 33 (Figs. 3 and 4) having three slots 34:, 35, and 36, equally spaced from each other, in which plungers 37, 38, and 39, re-

spectively, are adapted to beinserted (Figs.

3 and The shaft 12 is at all times maintained in a stationary position by these plungers, the operation of which will be more fully described hereinafter.

The ring 33 is held in position on the stationary shaft 12 (Fig. 1) adjacent to the hub 28 by a nut 10 threaded on the end of the protruding shaft 12. The plungers 37, 3S, and 39 are pressed inwardly by compression springs 11, 4:5, and 10, respectively. The plungers 37, 38, and 39 and the springs 14:, 15, and 16 are mounted in slots 1?, 4-8, and 49, respectively, in the housing 10 and thus at all times are kept from revolving. The end of that part of the housing 10 in which the plungers'and springs are mounted is covered with a cover 50 which may be removed whenever it is necessary to repair or replace the springs and plnngers.

Positioned at the rear 01'' the end of the shaft 12 is a wire supply spool 51 (Fig. 1) which is rotatably mounted in the housing 10. Pivotally mounted below the supply spool 51 is a tension arm assembly, denoted generally by reference numeral which consists of a bell crank lever 50 on one arm 57 of which is rotatably mounted a small grooved pulley 58. The lever 56 is pivotally mounted at point 59 to the housing 10. An arm 60 of the lever 50 is provided with a bore 63 in which is inserted a bolt 6-1 which is screwed into the housing 10. Interposed between the bolt 61 and the lever arm (30 is a compression spring 65 which pushes the rm (30 outwardly on the bolt 51 causing the other arm 5'? to press against a head 06 of the supply spool 51, acting as a brake thereon. The bore 63 of the arm 60 is considerably larger in diameter than the diameter of the bolt (3-1 so as to permit the arm (30 to freely ride on the bolt 61.

Located in alignment with a groove (37 of the grooved pulley 58 is a helical spring guide 68 which is also in alignment with groove 69 of another grooved pulley T0, rotatably mounted upon a portion of the housing 10. Secured to the housing by a small screw T1 is another guide 7 2 which is also arranged in a similar relation to the grooved pulley 70.

Each 01 the holders 25 and 26 consists essentially of an arbor 73 in the center. of which is secured a spring retaining member 7-1. Secured to the ring 19 surrounding the sleeve 18 are two guide pins 75 and 70 each having a hole 77 in their end.

The ring 19 is provided with a bore 30 through which a thread 81 and a wire 82, to be used in whipping, passes. The bore of the ring 19 is in alignment with a bore 02 in the whipping arm 20. Rotatably mounted in the end of the whipping arm are two small sheaves 83 and 8 1, the lower one S3 being a guide for the thread 81 and the upper one being a guide for the wire 82.

These sheaves and 81 have grooves which are in alignment with two bores 87 and 33, respectively, in the end of the whipping arm 20 from which the thread and wire emerge. The end of. the whipping arm 20 provided with a groove 01. somewhat V- shaped in which the end of the cord to be whipped is placed the bottom of the groove being in alignment with the top ol' the member 13.

The bobbin holders and 20 may from time to time when necessary. be refilled with bobbins very readily and easily by opening the cover 30 which covers the upper portion of the whipping mechanism. Fm thermore, it is to be understood that although only one thread bobbin 00 is shown in the drawings additional bobbins may be employed in like manner' Positioned below the supply spool 51. is a shaft which is rotatably supported in suitable bearings in the housing 10. Surrounding this shaft is a sleeve 00 which is suitably splincd to it. llotatably mounted upon the sleeve, but not secured thereto, is a pulley 07 which may be driven from any suitable source of power by a belt 08 or the like. Secured to the sleeve 00 intermediate the end or" the hou; 10 and one flange 09 ot the pulley 07 is a clutch member whose face provided with a corl: insert 101, which is contiguous with tla or the head 0;) of the pulle 0T. Mounted on the other side of the pulley 97 and surrounding and secured to the sleeve 90 is a similar clutch member 102 which also has a corlc insert 10 which is contiguous with the lace of the other head 101; of the pulley UT. The clutch member 102 is straddled by a forked end 105 of a lever 10G. Surrouiuiine' the sleeve 90 and secured thereto is a brake member 10? having a large 'l'ace plat-e 10*; which also provided with a corh insert 100 which contiguous with the portion oi? the housing designated by numeral 110. Inter-posed between the clutch member 102 and the braking member 10? and surrouruhnrr the sleeve 90 is a spring 111. Keved to the shaft 95 is a gear 112 which meshes with gear 2? which drives the whipping mechan ism as will be more fully described hereinafter.

Formed on the end of the shaft a worm which meshes with a worm gear 11'? secured to a vertical shaft 118. Moulded on the vertical shaft 118, but not secured thereto, is gear 119 having a long hub portion 120, the end of which engages the end 01" the hub of the gear 117. Surrounding the lower portion of the shaft 113 is a sleeve member 121 which is tapered at one end 122 the tapered end 122 fitting loosely in a tapered hole 123 in the end of gear 110. Surrounding and splincd to the shaft 11 a small thrust collar 121 which res of the'housing 10. interposed between this collar 124, and the end of the sleeve member 121, is a compression spring 125.

The end of the member 121 is straddled by a forked end 126 of a lever 127 which is pivoted at a point 128 to the housing 10. Secured to the top of the'lever 127 is a small plate 129 which is adapted to engage a shoulder 130 formed in a lever 131, which is pivotally secured to any usual type foot pedal (not shown). .Pivoted at one end of the lever 127 is a link 134 which is pivotally mounted upon one end of the lever 106 pivoted at a point, 135 in the housing. Positioned in the housing 10 under the lever 127 is a pin 136 around which is a compression spring 133 which normally forces the pin upwardly against the lever. Interposed between the housing 10 and the lever .131 is a spring 137 which draws the lever 131 inwardly when the machine is idle so that its shoulder 130 will engage plate 129.

Suitably supported in hearings in the housing is a rod 138 to which is keyed a detent member 139 which engages the under surface of the lever 106. One end of the rod 138 is provided with an adjusting screw 140, the head of which abuts against the upper end of the lever 131. The rod 138 is pivotally secured at its other end to a vertical rod 141 (Fig. 2) which is located in the rear of shaft 118 and is pivotally mounted at one end 142 in the housing 10, the other end 143 being pivotally fastened to i the end of a rod 144.

The gear 119 (Fig. 1)- meshes with a rack 143 which is reciprocably mounted in the housing 10. Gne end of the rack 145 is provided with a groove 146 in which rides a bifurcated end 147 of a lever 148, the other end of the lever 148 being pivotally secured to a cord support 150. A block 151 I is located intermediate the arms of the bi- 'furcated end of the lever 148 and is pivotally secured to the rack 145 by a pin 152. The lever 148 is provided with a slot 153 in which rides a block 154 pivoted to the bifurcated end 155 of an adjusting device 156. i The adjusting device 156 consists essentially of two elements 157 and 158 adapted to ride in keyways 159 and 160, respectively, formed in the housing 10. The element 157 has a thumb screw 161 which is adapted to engage the element 158. By

. loosening the pin 161 the elements can be moved up or down in their respective keyways 159 and 160 to vary the fulcrum point of lever 148 and to thereby vary the distance which the cord support 150 will be moved from the whipping arm 20. The end of the rack 145 abuts against a rubber element 162 which minimizes the jars and jerks of the machine.

Secured to the cord support 150 is a pin 165'in which one end of a tension spring 166 is secured, the other end of the spring 166 being fastened to the housing 10. Also secured to the support 150 is a stud 167 which is adapted, when the support 150 is moved outwardly, to engage a collar 168 formed on the rod 144. lnterposed between the collar 168 and the housing 10 and surrounding the rod 144 is a compression spring 169. It will be noted that the rod 144 protrudes through the housing 10 and the end thereof is provided with a small cap 170. Furthermore, when the mechanism is idle the spring'169 is compressed and the rod 144 assumes the position shown in Fig. 2. Then the mechanism is in operation the compression spring 169 is not in its compressed state as shown in Fig. 1.

The operation of this mechanism is as follows: The wire 82 is withdrawn from the spool 54 by the operator and threaded over the pulley 58, through the guide 68, around the pulley 7 0, through the guide 72, through the bushing 30, through the bore of the ring 19, through the bore 88 in the top of the whipping arm 20, around the pin 14 and the end thereof inserted in the retaining clip 17 on member 13.

Thread 81 is then drawn by the operator from the bobbin through the hole 77 in the guide pin 75, through bores 80 and 62, around the sheave 83 of the whipping arm 20, through the bore 87 at the end of the whipping arm 20, around the pin 14 and the end thereof also inserted in the retaining clip 17. A telephone cord 21 to be whipped previously havin had aportion of its braided insulation removed exposwhipping arm 20. It is of course apparent that the operator must hold the cord 21 in this position until the whipping operation is completed.

As shown in Fig. 2 when the mechanism is standing idle the shoulder 130 of the lever 131 is in engagement with the plate 129 secured to the top of the lever 127. By stepping on the foot pedal (not shown) the operator draws the lever 131 downwardly by causing one end of the lever 127 to be pulled downwardly. The lever 127 through the link 134 pulls one end of the lever 106 downwardly disengaging the under surface of the lever 106 from the detent member 139 which results (Fig. 2) in the spring 169 expanding and imparting a longitudinal motion to the rod 144, a swinging motion to the rod 141 and a longitudinal motion to rod 138 pivot ally secured to rod 141 intermediate its ends. This longitudinal motion of rod 138 causes the screw 1-10 to come in contact with the at the other end by the revolving me nber upper end of lever 131 moving it OUtWfll'tll" thus disengaging the shoulder theieot from the plate 129 01 lever 127 as best shown in Fig. 1 and also causes the detent member 139 to come in contact with the 111(l01 surface of lever 10G, preventing the spring 137 from, pushing the lever 127 upwardly. The lever 12? upon being pulled downwardly by means of the forked end 10:) ot lever roe causes the clutch members 102 and 101 to ie tightly prc d aga'nst the power driven pulley 9T vhich causes them and shaft 9.? to revolve. It will be noted that clutch member 112- in being brought into contact with the pulley causes spring 111 to expand. The eccentric huh 28 is caused to rotat through the ge: rs 2i and 112 and in so do )eriodically pushes one bv one the plan '31, 3S, and 35) o respective slots ring 33 which i t will be noted that it is through this action hub that the wire -32 around the shaft 12 with 20. the bushing 30 through s being in the eccen- It is to be unnerintegral with the shait 12.

ot the eccentric enabled to rotate the whipping arm I which the wire 82 pa trio part of the hub stood that the slots 34 3:"), and ranged equally apart in the ring permit two ot the hree plungers 311 to he always in engagement respective slots which nables the shalt to be alwavs maintained in a stationary po sition i 2lr=l1lll(l1 as the plungers are mounted in th nousi 1g 10.

The sleeve 18 in rotating carries with it the whipping arm which withd aws the thread 31 and the wire from their respectice supply sources and applies it about the cord 21 in such a manner to cause the wire 52 to be wound around the end 01 the exposed conductor 23 of the cord 21 and the thread 81 to be whipped about a portion of the braided insulation 32 on the cord 21 (Fig. Furth rmore, it is especially noteworthy that the wire 82 is wound about the end of thread 81, thereby causing the end of the thread to be held in a scene manner. Although only one hread 81 is shown in the drawing for whipping the portion of the braided insula ion 32, it to l e understood that the mechanism herein disclosed is also adapted to whip a plurality of such threads about the portion 32 ot' the cord.

The shaft in rotating causes wo m 117 to revolve, wl ich is secured to the s 118. The end ot the lever 12? in beir pulled do\ 'nwardly actuates the member 121 upwardly, pushing the tapered end 122 thereot' into frictional engagement with the tapered walls or" the hole 123 in the end of gear 119 causing gear 119 to rotate, inasmuch as member 118 is trictionally engaged at one end by the revolving gear 117 and 121 slidably keyed to sha'l't 11$. The gear 119 actuates the rack 115 in a direction indicated by the arrow which through the lever 118 causes the cord support to be moved out vardly from the whipping arm 20, thereby resulting in the wire 82 and thread 81 being spirally wound around the cord 21.

By loosening the elements 157 and 158 of the adjusting device 1515 and moving them upwardly or downwardly their respective s 159 and the fulcrum point of the lever may be varied, thereby enabling the distance which the cord support 1:70 will move during the whipping operation to be also vari lly so doing various sizcs of wires and threads may be whipped in closed or in open formation with this san'ie mechanism.

The cord support 150 in its movement torward (impresses the spring 109 and spring 1136. l'pon the cord reaching the end of its forward s tie detcnt member 1331 comes out l'rmn unocr the lcv 1' lot which through pin 1 1%: an 1 33 results in the lever 12S, l ni; id lever 111' being moved upwan about their respective pivot points i the positions 1' shown in Fig. The love: 1 11; in its upward movement disconnects the clutch 11101111) 102 and 111 1 from i 1 7. pc t1 the pulley J? to rolate idiv. 'lhe d end 1113 of the lever 111 forces V U he clerence numeral *reby braking the shaft $15 and arrest 'otation. nwhile the c "y stored up in the red spring 16 causes the cord support assume its original position, which tn ever 118 draws the rack r 3 l)2tfl( to its normal position as shown in Fig. 1. The sori which helps insure a good fric :1 engz cment between the tapered end 122 01 the iembcr 121 and the walls of u the hole 123 of member 118 is compressed by the meinber 121 straddled by one end 126 of lever 12? due to lever 12? pivoting at point 128 and drawing the member 121 downward It will be noted that the detent member 13?)- in e the lever 1116 as shown in prevents the spring 161) from reacting and maintuns it ready lor the next opera- Furt iermore. by stepping on the toot (not shown) the operator can move 1 i 1 L upward to its original position, h -h t irough spring 1 is snapped back so that the shoulder 130 of lever 131 is in engagement with plate on lever 12?.

The operator then takes the whipped cord and removes it from the V-shaped grooves 91 and drz win the wire 82 and thrcad ETC,

81 around the pin 14 through the retaining clip 17 and over the tapered edge 16 of cutting blade 19, severing the surplus wire 81 and thread 82 from the cord 21, leaving the mechanism ready for another cord.

lVhat is claimed is:

1. In a mechanism for whipping a core with strand material, means for whipping the strand around the core, a support for the core, means for causing a relative movement between the support and the whipping means to cause the strand to be whipped about the core, a stationary element, and means located thereon for holding the end of the strand during the whipping operation.

2. In a mechanism for whipping a core with strand material, means for whipping a plurality of strands around the core, said means designed to whip each strand about diflerent section of the core, a support for the core, means for causing a relative movement between the support and whipping means to cause the strands to be whipped about the core, a stationary element, means 7 located thereon for holding the strands during the whipping operation, and for severing the surplus strands.

3. In a mechanism for whipping the end of a core, means for contemporaneously whipping a portion of the core with a textile strand and another portion of the said core with a metallic strand. 7

4. In a mechanism for.whipping a telephone cord having an electrical conductor covered with braided insulation, means for contemporaneously whipping a portion of the braided insulation of the telephone cord with thread and the end of the exposed conductor thereof with wire.

5. In a mechanism for whipping atelephone cord having an electrical conductor covered with braided insulation, means for contemporaneously whipping a portion of the braided insulation of the telephone cord with thread, the end of the exposed conductor thereof with wire in such a manner so that the wire is wound over the end of the thread.

6. In a mechanism for whipping a core with strand material, means for revolving a supply of strand material around the axis of the core, means for withdrawing the strand material from the revolving supply and for whipping it around the core, a support for the core, means for causing a relative movement between the support and the whipping means to cause the strand to be whipped about the core, a stationary element, and means located thereon for holding the end of the strand material during the whipping. operation.

7. In a mechanism for whipping the end of a core covered with braided material, a support for said core, means for contemporaneously whipping a portion of the braided covering with thread and the exposed portion of the core with wire, and means for causing a relative movement between the support and the whipping means to cause the thread and wire to be whipped about the core in spiral formation.

8. In a mechanism for whipping the end of an electrical conductor covered with braided insulation, a supply of thread revolvable about the axis of the conductor, a supply of wire, means for contemporaneously whipping a portion of the braided insulation with thread and the exposed portion of the conductor with wire, and means for causing the thread and wire to be whipped about the core in spiral formation.

In witness whereof, I hereunto subscribe my name this 29th day of July A. D, 1924;.

CARL ODENWALD HAASE. 

